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[Guide]Errors during SQL queries and Solutions

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Let's Start:

 

Error Code: 1064 - You have an error in your SQL syntax;

- Syntax error in query that is usually indicated where

 

Error Code: 1054 - Unknown column 'ххххх' in 'field list'

- Unknown column name in a query in the list of fields

- Compare fields in the query and the target table and correct the query

 

Error Code: 1050 - Table 'ххххх' already exists

- An attempt to create an existing table. The table in the database can of course

remove, but you should be aware of their actions. Suggestion -

before deleting the existing table - make backup!

 

Error Code: 1060 - Duplicate column name 'ххххх'

- Attempting to add an existing column. If you do update base

therefore, most likely in response to this request is not necessary

 

Error Code: 1146 - Table 'base_name.table_name' doesn't exist

- The table in the database with the name of such and such does not exist. You must create

empty table before completing this request.

 

Error Code: 1136 - Column count doesn't match value count at row 1

- Number of columns in the table does not match the number of variables

in the query. You can try to understand what a variable is missing or

superfluous in the request, comparing with existing data tables.

 

Error Code: 1062 - Duplicate entry 'ххххх' for key 1

- An attempt to record a pre-existing value in the key column. Change the value of

variable in the query. If you need to perform multiple queries on a

problem in different tables, you must write the same variable

wherever it exists in order to avoid the loss of links.

 

Error Code: 2006 - MySQL server has gone away

- When executing the request lost connection to SQL server. Error came across to me at

work SqlYog when creating a dump table (usually large) and follow

try to fill it. Solution - create a query with the structure of the table separately

and export the data tables in a separate file. Then create a table

first request, and import the data file.

 

Error Code: 1062 - Duplicate entry "Value" for key 1

- Change the value of another.

 

[Err] 1050 - Table 'ai_agents' already exists 
[Err] -- ---------------------------- 
-- Table structure for ai_agents 
-- ---------------------------- 
CREATE TABLE `ai_agents` ( 
`entry` int(11) unsigned NOT NULL DEFAULT '0', 
`type` smallint(5) unsigned NOT NULL DEFAULT '0', 
`event` int(11) unsigned NOT NULL DEFAULT '0', 
`chance` int(11) unsigned NOT NULL DEFAULT '0', 
`maxcount` int(11) unsigned NOT NULL DEFAULT '0', 
`spell` int(11) unsigned NOT NULL DEFAULT '0', 
`spelltype` int(11) unsigned NOT NULL DEFAULT '0', 
`targettype` int(11) unsigned NOT NULL DEFAULT '0', 
`cooldown` int(8) NOT NULL DEFAULT '0', 
`floatMisc1` float NOT NULL DEFAULT '0', 
`Misc2` int(11) unsigned NOT NULL DEFAULT '0', 
PRIMARY KEY (`entry`,`type`,`spell`), 
UNIQUE KEY `a` (`entry`,`spell`,`type`) 
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='AI System'; 
[Msg] Finished - Unsuccessfully 

 

- delete the existing table and pour a new one.

:O very usefull "guide" leki keep uploading it ^^

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